“…where LQagcoo describes the collaborative agglomeration index of manufacturing and producer services industry, LQagman denotes the index of manufacturing industry agglomeration, and LQagser is the producer services industry agglomeration index, both the LQagman and LQagser are calculated by location entropy index. In particular, refer to the classification principles of producer services (2019) issued by the National Bureau of Statistics and the general principles of academic research (Waiengnier et al, 2019;Xie et al, 2019;Yang et al, 2020), "wholesale and retail industry", "transportation, warehousing and postal industry", "information transmission, computer services and software industry ", "financial industry", "leasing and business services industry", "scientific research, technical services and geological exploration industry" comprise the producer service industry.…”